I really don't want to lie down and win

very perfect?

Why does it sound like listening to a book?

Many people took a sneak peek at Xu Mang, seeing that he was in a decadent state and his eyes were a little slack. They couldn't imagine that such a person could complete a set of basic physics textbooks in just a few days, and ...Won the praise of the academicians of the Institute of Physics.

have to say,

Xu Mang was synonymous with miracles.

soon,

Arriving at the teaching classroom, a huge multimedia classroom, the students are freshmen from all corners of the country. For being able to sit here and hear the legendary Professor Xu Mang give a lecture, there is a tinge of anticipation in their trepidation.

"Fuck!"

"Professor Xu...so young!" A girl saw Xu Mang standing on the podium, and fell into a nympho state for a while, thinking about her professors, and then looking at Professor Xu in front of her, why? Why is someone else's professor so handsome?And the professors who taught me were all... Forget it, they were all tears.

"..."

"I heard...Professor Xu Mang is only in his 20s, right?" The girl sitting on the side said curiously: "It's a pity...I heard that Professor Xu has a fiancee. I really don't understand why such an outstanding Man, why did he enter the grave of marriage so quickly."

"I wonder too!"

"You say that there is someone in the world who is worthy of Professor Xu, what is the background of the other party?" The girl with glasses frowned, with a trace of discrimination on her face: "I think Professor Xu has been threatened! "

at this time,

There are still 15 minutes before class starts, and during this long 15 minutes, many people have taken out their mobile phones and kept taking pictures of Xu Mang, and there are even live broadcasts, in short, it is to record this magical encounter .

a picture,

a piece of video,

Suddenly it started to go viral on the Internet, and there was even news that Xu Mang was going to resign from Fuda and go to Tsinghua University, but this kind of news was soon clarified. The official Weibo of both schools clarified, there is no way... involved When it came to Xu Mang, the speed of public relations was so fast.

But as a young man, Xu Mang couldn't help but took out his phone and took a selfie of himself, of course, with this group of students in the background.

as time goes by,

There are still a few minutes before class,

at this time,

The students noticed that Xu Mang didn't seem to bring a textbook... Could it be that Professor Xu is relying entirely on memory?

Jingle Bell

the bell rings,

All the students at the scene put away their playful emotions and put on a serious and rigorous attitude to deal with the next experience. Perhaps this will be an unforgettable journey.

"Cough cough!"

"Class begins!"

"I am now randomly selecting a certain content of quantum mechanics." Xu Mang opened a software, clicked it casually, there was no way... The above required random content to be taught on the spot, so as to test the premise that the professor was not prepared, the students their receptivity.

"Uh..."

"Time-dependent approximation methods and transitions."

Xu Mang glanced at the topic he was drawing, got up and glanced at the content of the projection behind him, and said calmly, "Please turn to page 221 of quantum mechanics in basic physics, and the class will officially start now!"

"???"

"???"

"???"

Autumn bean sacks!

This...

Does this directly report the number of pages?

Everyone in the multimedia classroom was stunned for a moment, including the professors sitting in the back row, and Hu Feng, the leader of the silent textbook group, who were taken aback by Xu Mang's memory. They were sure that this was not a premise. past acting content.

"This..."

"Does he know all the content?" Hu Feng stared wide-eyed, looked at Xu Mang in horror, and muttered, "My God... the content of tens of millions of words, he actually knows all the content?"

however,

Xu Mang didn't give anyone time to continue thinking. He stood on the stage and said silently, "Let's talk about the first content first, about the selection rules of the atomic state that absorbs or emits a photon when the electric dipole interacts."

"This involves three aspects, the first is the description of the selection rule of the electric dipole transition for the atomic state that absorbs or emits a photon, the explanation of the orbital angular momentum, spin, helicity and parity of the two photons, Its three-Bohr model."

"The first two are very simple. According to the electric dipole transition selection rule, we can..."

Xu Mang stood in front of the blackboard, holding a chalk, while explaining the content, while analyzing the content, he didn't read a single word in the textbook, but it was completely consistent with the content.

"Notice!"

"When we calculate how many electron volts the width of the 2P state is, we must follow the uncertainty relation..."

Xu Mang, who was in front of the blackboard, spoke more and more fluently. In a blink of an eye, he talked about the fifth part, the distribution of energy and momentum of particles in a one-dimensional infinite deep potential well when the wall was suddenly removed.

About this content,

There was no corresponding explanation in the textbook, Xu Mang just asked a question.

"When the wall is suddenly separated and the distance is infinite, it means that the wall is completely disassembled in an instant, and the wave function of the particle has no time to respond in this instant, so it will maintain the original shape, but the Hamiltonian after the dismantling of the wall has already It's different from before the demolition."

"The wave function in the original form is not the eigenstate of the newly removed Hamiltonian, so...the initial condition of the basic wave function is to solve the Schrödinger wave equation for free particles."

at the same time,

The last few rows of multimedia professors,

Listening quietly to the content of Xu Mang's class, watching him explain the problem of particles in a one-dimensional infinite deep potential well on stage with his own memory, and then flipping through the textbook in his hand, the content is exactly the same, even one There is nothing wrong with the words.

of course,

The fully compatible content is limited to the topic itself, and Xu Mang is still in the current class environment for analyzing the content of the topic. After all... the problem of particles in a one-dimensional infinite deep potential well is not something freshmen are exposed to, but He speaks plainly and easily absorbs the knowledge.

"Ugh..."

"I can speak so perfectly without textbooks. If I brought books... I estimate that at least half of the thirty or so students are future Nobel Prize winners in physics." A professor smiled wryly: "I'm not kidding, really... not at all!"